export interface IndexingConfig {
  chunkSize: number;
  chunkOverlap: number;
  embeddingModelId: string;
  mode?: 'fast' | 'precise'; // Processing mode: fast/precise
  groupIds?: string[]; // Groups to associate with the file upon upload
}

// Vision Pipeline 相关类型
export interface VisionAnalysisResult {
  text: string;              // Extracted text content
  images: ImageDescription[]; // Image descriptions
  layout: string;            // Layout type
  confidence: number;        // 信頼度 (0-1)
  pageIndex?: number;        // Page number
}

export interface ImageDescription {
  type: string;              // Image type (graph/diagram/flowchart etc.)
  description: string;       // Detailed description
  position?: number;         // Position within the page
}

export interface PipelineResult {
  success: boolean;
  fileId: string;
  fileName: string;
  totalPages: number;
  processedPages: number;
  failedPages: number;
  results: VisionAnalysisResult[];
  cost: number;              // Cost (USD)
  duration: number;          // Duration (seconds)
  mode: 'precise';
}

export interface ModeRecommendation {
  recommendedMode: 'precise' | 'fast';
  reason: string;
  estimatedCost?: number;    // Estimated cost (USD)
  estimatedTime?: number;    // Estimated time (seconds)
  warnings?: string[];
}

// Type definitions for knowledge base extensions
export interface KnowledgeGroup {
  id: string;
  name: string;
  description?: string;
  color: string;
  fileCount: number;
  parentId?: string | null;
  children?: KnowledgeGroup[];
  createdAt: string;
  updatedAt?: string;
}

export interface CreateGroupData {
  name: string;
  description?: string;
  color?: string;
  parentId?: string | null;
}

export interface UpdateGroupData {
  name?: string;
  description?: string;
  color?: string;
  parentId?: string | null;
}

export interface KnowledgeFile {
  id: string;
  name: string;
  originalName: string;
  size: number;
  type: string;
  status: 'pending' | 'indexing' | 'extracted' | 'vectorized' | 'failed' | 'ready' | 'error';
  groups?: KnowledgeGroup[];
  createdAt: string;
  updatedAt: string;
}

export interface SearchHistoryItem {
  id: string;
  title: string;
  selectedGroups: string[] | null;
  messageCount: number;
  lastMessageAt: string;
  createdAt: string;
}

export interface SearchHistoryDetail {
  id: string;
  title: string;
  selectedGroups: string[] | null;
  messages: Array<{
    id: string;
    role: 'user' | 'assistant';
    content: string;
    sources?: Array<{
      fileName: string;
      content: string;
      score: number;
      chunkIndex: number;
    }>;
    createdAt: string;
  }>;
}

export interface PDFStatus {
  status: 'pending' | 'converting' | 'ready' | 'failed';
  pdfPath?: string;
  error?: string;
}

export interface NoteCategory {
  id: string
  name: string
  parentId?: string
  level: number
  userId: string
  tenantId: string
  createdAt: string
  updatedAt: string
}

export interface Note {
  id: string;
  title: string;
  content: string;
  userId: string;
  tenantId?: string;
  groupId?: string;
  categoryId?: string;
  sharingStatus: 'PRIVATE' | 'TENANT' | 'GLOBAL_PENDING' | 'GLOBAL_APPROVED';
  createdAt: string;
  updatedAt: string;
  user?: {
    id: string;
    username: string;
    name?: string;
  };
}

export interface RawFile {
  name: string;
  type: string;
  size: number;
  content: string;
  preview?: string;
  file: File; // Keep original file for upload
  isNote?: boolean;
  textContent?: string;
}

export enum Role {
  USER = 'user',
  MODEL = 'model',
}

export interface Message {
  id: string;
  role: Role;
  text: string;
  timestamp: number;
  isError?: boolean;
  sources?: ChatSource[];
}

export interface ChatSource {
  fileName: string;
  title?: string;
  content: string;
  score: number;
  chunkIndex: number;
  fileId?: string;
}

export interface ChatState {
  messages: Message[];
  isLoading: boolean;
}

export type Language = 'ja' | 'en' | 'zh';

export enum ModelType {
  // Changed from type to enum
  LLM = "llm",
  EMBEDDING = "embedding",
  RERANK = "rerank",
  VISION = "vision",
}

// 1. Model Definition (The "Provider" setup)
export interface ModelConfig {
  id: string;
  name: string; // Display name, e.g. "My DeepSeek"
  modelId: string; // The actual string ID sent to API, e.g., "gpt-4o"
  baseUrl?: string; // Base URL for OpenAI compatible API
  apiKey?: string; // API key for the service
  type: ModelType;
  dimensions?: number; // Vector dimensions of the embedding model
  supportsVision?: boolean; // Whether it supports vision capabilities

  // ==================== Additional Fields ====================
  /**
   * Model's input token limit
   * e.g., OpenAI=8191, Gemini=2048
   */
  maxInputTokens?: number;

  /**
   * Batch processing limit (maximum number of inputs per request)
   * e.g., OpenAI=2048, Gemini=100
   */
  maxBatchSize?: number;

  /**
   * Whether it is a vector model (for identification in system settings)
   */
  isVectorModel?: boolean;

  /**
   * Model provider name (for display)
   * e.g., "OpenAI", "Google Gemini", "Custom"
   */
  providerName?: string;

  /**
   * Whether it is enabled
   */
  isEnabled?: boolean;

  /**
   * Whether to use this model as the default
   */
  isDefault?: boolean;
}

// 2. Application Logic Settings (The "App" setup)
export interface AppSettings {
  // References to ModelConfig IDs
  selectedLLMId: string;
  selectedEmbeddingId: string; // Default for new uploads, and used for query encoding
  selectedRerankId: string;

  // Model Hyperparameters
  temperature: number;
  maxTokens: number;

  // Retrieval
  enableRerank: boolean;
  topK: number;
  similarityThreshold: number; // Similarity threshold for vector search
  rerankSimilarityThreshold: number; // Similarity threshold for reranking
  enableFullTextSearch: boolean; // Whether to enable full-text search
  hybridVectorWeight: number; // Vector weight for hybrid search

  // Search Enhancement
  enableQueryExpansion: boolean;
  enableHyDE: boolean;

  chunkSize?: number;
  chunkOverlap?: number;

  // Language
  language?: string;

  // Coach
  coachKbId?: string;

  // Vision
  selectedVisionId?: string;
}

// Default Models (Frontend specific)
export const DEFAULT_MODELS: ModelConfig[] = [];

export const DEFAULT_SETTINGS: AppSettings = {
  selectedLLMId: '',
  selectedEmbeddingId: '',
  selectedRerankId: '',
  selectedVisionId: '',

  temperature: 0.3,
  maxTokens: 8192,

  enableRerank: false,
  topK: 4,
  similarityThreshold: 0.3, // Default similarity threshold for vector search
  rerankSimilarityThreshold: 0.5, // Default similarity threshold for reranking
  enableFullTextSearch: false, // Turn off full-text search by default
  hybridVectorWeight: 0.7, // Vector weight for hybrid search
  enableQueryExpansion: false,
  enableHyDE: false,
  chunkSize: 1000,
  chunkOverlap: 100,
  language: 'ja',
};

export const API_BASE_URL = '/api'

export interface Tenant {
  id: string;
  name: string;
  domain?: string;
  parentId?: string | null;
  children?: Tenant[];
  members?: TenantMember[];
  settings_obj?: any;
  createdAt: string;
  updatedAt: string;
}

export interface TenantMember {
  id: string;
  userId: string;
  tenantId: string;
  role: string;
  user?: {
    id: string;
    username: string;
    displayName?: string;
    email?: string;
  };
  createdAt: string;
  updatedAt: string;
}